/Engine/Source/Runtime/MovieScene/Public/EntitySystem/MovieSceneEntityManager.h
Defines a new child initializer that applies only to entities factoried within this entity manager
An index into the array of initializers that should be used for removal
int32 DefineInstancedChildInitializer ( [TInlineValue](API\Runtime\Core\Misc\TInlineValue)< [FChildEntityInitializer](API\Runtime\MovieScene\EntitySystem\FChildEntityInitializer) > && InInitializer )